Ammar Shihan

Ammar Shihan

Ph.D. in Functional Ecology
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About

13
Publications
1,387
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Citations
Introduction
I am an ecosystem ecologist, interested in plant-soil interactions under the ongoing climate change. Through laboratory and field experiments, I study the role of plant diversity in the response of ecosystem to a decrease in water availability with a particular interest in belowground processes, such as soil microbial community functioning and functional responses in plant roots.
Additional affiliations
January 2017 - April 2017
Centre d'Ecologie Fonctionnelle et Evolutive
Position
  • PhD

Publications

Publications (13)
Article
1. The persistence of perennial herbaceous species is threatened by increasing aridity. However, summer dormancy is a strategy conferring superior survival to grasses adapted to hot and dry summers. The role of temperature on the induction of summer dormancy was investigated in the perennial grass Dactylis glomerata to analyse the potential express...
Article
Full-text available
Plant community composition influences soil microbial communities through plant trait variations that lead to changes in nutrient and organic carbon inputs into the soil by root exudates and plant litter. Although plant litter and living roots are known to influence microbial functioning independently, their relative effects are rarely measured sim...
Article
Full-text available
The increasing intensity and frequency of droughts predicted for the Mediterranean basin with ongoing climate change will impact plant communities and ecosystem functioning. This study investigated the effect of severe recurrent droughts and the role of the neighbor plant identity on the growth and survival of three abundant and co-existing species...
Article
Full-text available
Aim The functioning of soil microbial communities is co-determined by plant community composition and environmental factors. Decreased precipitation predicted in the Mediterranean area will affect both determinants, yet their interplay on soil microbial functioning is poorly understood. Here we assessed the interaction of plant community diversity...
Article
Full-text available
Climate and plant diversity are major determinants of carbon (C) and nitrogen (N) dynamics in decomposing plant litter. However, the direction and extent to which these dynamics are affected by combined changes in climate and biodiversity are not well understood. We used a field experiment in a Mediterranean shrubland ranging from one to four shrub...
Article
Full-text available
This study aimed at quantifying the consequences of reduced precipitation and plant diversity on soil microbial community functioning in a Mediterranean shrubland of southern France. Across a natural gradient of shrub species diversity, we established a total of 92 plots (4 × 4 m) with and without a moderate rain exclusion treatment of about 12 % o...
Thesis
Longer drought periods and/or overall less precipitation are thought to be major consequences of ongoing climate change in the Mediterranean region. These changes in the water regime will likely affect community composition, biodiversity and ecosystem processes, but very little is known about how biodiversity and changes in precipitation interactiv...
Presentation
Quantifying the consequences of reduced precipitation and changes in plant diversity on soil microbial community functioning
Article
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